presidential debates. so, a lot of work, preparation has gone into the debate. what can we expect to see? >> reporter: kelly, this is a big moment. we know president obama and mitt romney have done their walkthroughs. now they're in the hotel getting ready. now we're down to the wire. here are a few things to keep in mind. first, how will the candidates stack up on the economy. it's a huge focus for tonight's debate and a major issue on the minds of voters. the president will argue his policies are working. mitt romney will point to his business experience. >> we can create a million new manufacturing jobs. >> reporter: can they accomplish their goals. the president needs to point to achievements and lay out a clear vision for what he would do with a second. for mitt romney he needs to appear presidential. voters need to look at him and say i can see you in commander in chief. >> the president's policies do not work. he doesn't get that. he doesn't understand that. >> reporter: equally important is handlin